For those planning on watching the movies, might I suggest watching them in a better order? Never mind, I'm going to whether you like it or not!
IV, V, II, III, VI.
That order does several things. Not only does it cut out the useless crap that is Episode I, but foremost it keeps the story about Luke. Things are also less confusing and seem more canon when you start out with IV and V, then when you find out Vader is Luke's father, flash back to II and III to get that story (while leaving out the useless, non-contributing Episode I drivel), then nicely conclude the story with VI.
Try it! I think you'll like it.